By Kaigui Bian, Jung-Min Park, Bo Gao

ISBN-10: 3319073281

ISBN-13: 9783319073286

ISBN-10: 331907329X

ISBN-13: 9783319073293

This ebook supplies a entire review of the medium entry regulate (MAC) ideas in cognitive radio networks, with a particular specialize in how such MAC ideas permit diverse instant structures to coexist within the similar spectrum band and perform spectrum sharing. From set of rules layout to the newest advancements within the criteria and spectrum coverage, readers will take advantage of modern wisdom of the way cognitive radio structures coexist and proportion spectrum assets. insurance contains cognitive radio rendezvous, spectrum sharing, channel allocation, coexistence in television white house, and coexistence of heterogeneous instant structures.

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Bn−1 } can be constructed based on D according to Definition 3. Since D contains more than half of the elements in Zn , we refer to such a cyclic quorum system, S, as a majority cyclic quorum system. For example, S = {{0, 1, 2}, {1, 2, 3}, {2, 3, 0}, {3, 0, 1}} is a majority cyclic quorum system under Z4 . 3 Network Model We assume an OSS environment, where secondary users equipped with CRs dynamically access spectrum. Suppose multiple pairs of (secondary) senders and receivers are operating over N orthogonal frequency channels that are licensed to the primary user.

1007/978-3-319-07329-3_3 19 20 3 Rendezvous of Cognitive Radios problem in Sect. 3. In Sects. 5, we present an asymmetric optimal ACH system and a symmetric optimal ACH system. We analytically compare the proposed ACH system designs with existing CH schemes in Sect. 6. We evaluate our proposed ACH schemes using simulation results in Sect. 7, and summarize this chapter in Sect. 7. 1 Common Control Channel Based Rendezvous In a typical multi-channel MAC protocol, nodes contend for channels by exchanging MAC layer control packets in the common control channel (CCC) [92, 113].

The cyclic rotation to q will generate another quorum, q , of the same type. These properties hold for any two quorums in an array-based quorum system. 2 Constructing Asynchronous Channel Hopping Systems In this subsection, we introduce an algorithm that uses an array-based quorum system to construct an ACH system that can be used by secondary nodes to establish links in a distributed manner. Suppose we want to construct an ACH system that enables any pair of CH sequences to rendezvous in N distinct channels, where N is the total number of available channels.

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Cognitive Radio Networks: Medium Access Control for Coexistence of Wireless Systems by Kaigui Bian, Jung-Min Park, Bo Gao

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